On 2018/12/14 13:56, zhangjun wrote: > IOMAP uses PG_private a little different with buffer_head based > filesystem. > It uses it as marker and when set, the page counter is not incremented, > migrate_page_move_mapping() assumes that PG_private indicates a counter > of +1. > so, we have to pass a extra count of -1 to migrate_page_move_mapping() > if the flag is set. > > Signed-off-by: zhangjun <openzha...@gmail.com> > ---
I found that it fixed in https://patchwork.kernel.org/patch/10684835/ and has been merged in https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=61c6de667263184125d5ca75e894fcad632b0dd3 It seems it has been corrected by Piotr. Thanks, Gao Xiang
